Air ferns (Sertularia argenta) are commonly sold as a curiosity or a decorative "indoor plant", and as underwater decorations for aquaria in stores, and are labeled as "air ferns". Air ferns do not grow, have any roots, or even have leaves, as they are not even plants, but small dead and dried colonies of small animals called hydrozoans that have been dyed green. If soaked in water, the green coloring will dissolve. They belong to the phylum cnidaria, class hydrozoa. The fernlike branches of Sertularia are composed of many, small, chitinous chambers where individual animals once lived. When the colony was alive, a polyp with numerous tentacles occupied each of the chambers, called hydrotheca. Most commercial air ferns are collected by trawlers in the North Sea Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla Porifera (sponges) Ctenophora (comb jellies) Cnidaria (coral, jellyfish, anenomes) Placozoa (trichoplax) Subregnum Bilateria (bilateral symmetry) Acoelomorpha (basal) Orthonectida (parasitic to flatworms, echinoderms, etc. ... Classes Anthozoa - Corals and sea anemones Cubozoa - Sea wasps or box jellyfish Hydrozoa - Hydroids, hydra-like animals Scyphozoa - Jellyfish Cnidaria is a phylum containing some 10,000 species of relatively simple animals found exclusively in aquatic environments (most species are marine). ... Orders Actinulida Capitata Chondrophora Filifera Hydroida Siphonophora Trachylina Organisms that are in Class Hydrozoa come from the Phylum Cnidaria. ... your mom goes to coloege LOL // Value of binomial nomenclature The value of the binomial nomenclature system derives primarily from its economy, its widespread use, and the stability of names it generally favors: Every species can be unambiguously identified with just two words. ... Carolus Linnaeus Carl Linnaeus, also known after his ennoblement as ▶ (help· info), and in English usually under the Latinized name Carolus Linnaeus (May 23, 1707 – January 10, 1778), the name with which his publications were signed, was a Swedish botanist and physician who laid the foundations for the modern scheme... 1758 was a common year starting on Sunday (see link for calendar). ... Divisions Land plants (embryophytes) Non-vascular plants (bryophytes) Marchantiophyta - liverworts Anthocerotophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta - flowering plants Adiantum pedatum (a fern... Roots is: The plural of Root Roots (album) Roots (TV miniseries), a mini-series based on a novel by Alex Haley Roots: The Saga of an American Family, a novel by Alex Haley Roots Canada Ltd. ... This article is about the leaf, a plant organ. ... Phyla Porifera (sponges) Ctenophora (comb jellies) Cnidaria (coral, jellyfish, anenomes) Placozoa (trichoplax) Subregnum Bilateria (bilateral symmetry) Acoelomorpha (basal) Orthonectida (parasitic to flatworms, echinoderms, etc. ... Phylum (plural: phyla) is a taxon used in the classification of life, adopted from the Greek phylai the clan-based voting groups in Greek city-states. ... Classes Anthozoa - Corals and sea anemones Cubozoa - Sea wasps or box jellyfish Hydrozoa - Hydroids, hydra-like animals Scyphozoa - Jellyfish Cnidaria (silent c - from New Latin cnida nematocyst, fr. ... Class ASCII art NFO header by a!b. ... In zoology, a polyp is one of two forms of individuals found in many species of cnidarians. ... Tentacles can refer to the elongated flexible organs that are present in many invertebrates, and sometimes to the hairs of the leaves of insectivorous plants. ... Categories: Water-transport stubs | Ship types ... The North Sea is a sea of the Atlantic Ocean, located between the coasts of Norway and Denmark in the east, the coast of the British Isles in the west, and the German, Dutch, Belgian and French coasts in the south. ...

External links

http://waynesword.palomar.edu/trmar99.htm#airfern